You have 2,088 grams of a radioactive kind of xenon. How much will be left after 18 hours if its half-life is 9 hours?

So idk ... 18 divied by 9 then ... idk

70.72 - 2 * (6.64 - 4.64) 4

Ana has a poster board in the shape of a rectangle. she draws 1 line to cut the poster into 2 new shapes. The 2 new shapes have 7 side and 7 vertices in all. what would the 2 shapes look like?

Simplify 5 (x + 4) + 10 - 2x + 3 (2x + 9)

Nola fits together p pieces a day of a 5,000-piece puzzle. Write an algebraic expression for this situation and explain what it represents.

A coal mine worker is 650 feet below the ground in a mine. Another coal mine worker is 7 feet above ground operating machinery. Write an integer for the position of each worker relative to the ground. Find the absolute value of each integer.

Which of the following expressions are factors of 25x^3-75x^2-9x+27? There may be more than one correct answer. Select all correct answers. a. 5x+3 b. x+3 c. x-3 d. x^2-3x+9 e. x^2+6x+9 f. 5x-3

N Florida, the number of alcohol-related traffic deaths increased in 2009 compared to 2008.

t is commonly assumed that babies are equally likely to come as either a boy or a girl. This is not true. Actually, about 51.3% of all babies are boys. If a family has two children (not twins), what is the probability they have one boy and one girl?

Which statement about the value of x is true?

How do you find the 19-4c=17